Remove unnecessary/incorrect bind

lib/runtime/dart/_operations.js

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /* This library defines runtime operations on objects used by the code
  * generator.
  */
 dart_library.library('dart/_operations', null, /* Imports */[
 ], /* Lazy Imports */[
   'dart/async',
@@ skipping 27 matching lines @@
   function dload(obj, field) {
     field = _canonicalFieldName(obj, field, [], field);
     if (classes.hasMethod(obj, field)) {
       return classes.bind(obj, field);
     }
     // TODO(vsm): Implement NSM robustly.  An 'in' check breaks on certain
     // types.  hasOwnProperty doesn't chase the proto chain.
     // Also, do we want an NSM on regular JS objects?
     // See: https://github.com/dart-lang/dev_compiler/issues/169
     let result = obj[field];
-
-    // TODO(vsm): Check this more robustly.

[vsm, 2015/11/30 22:21:30]

The method tearoffs should be caught in line 40 above.  I think this code might
be a leftover from before we had method metadata.

It never appears to hit in our tests or in Angular.

-    if (typeof result == "function" && !hasOwnProperty.call(obj, field)) {
-      // This appears to be a method tearoff.  Bind this.
-      return result.bind(obj);
-    }
-        return result;
+    return result;
   }
   exports.dload = dload;
 
   function dput(obj, field, value) {
     field = _canonicalFieldName(obj, field, [value], field);
     // TODO(vsm): Implement NSM and type checks.
     // See: https://github.com/dart-lang/dev_compiler/issues/170
     obj[field] = value;
     return value;
   }
@@ skipping 388 matching lines @@
     next() {
       let i = this.dartIterator;
       let done = !i.moveNext();
       return { done: done, value: done ? void 0 : i.current };
     }
   }
   exports.JsIterator = JsIterator;
 
 
 });